discribe the T.S. of anther
Answers
Anther develop the cells of the sporogenous tissues undergo meiotic division to form miscrospore tetrads.
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Answer:
(1) eternally it shows four chambers called microsproangia or pollen sacs.
(2) The anther consists of two main parts, viz., anther wall and microsporangium or pollen
(3) The wall of the anther can be differentiated into four layers, viz.. epidermis, endothecium, middle layers and tapetum.
(4) The epidermis is the outernmost layer of the anther wall. It is made up of lattened cells which are protective in functio.
(5) The endothecium lies internal to the epidermis. It is made up of a single layer of cells. The cells of endothecium show fibrous thickenings on radial walls.
(6) Internal to the endothecium, lie 1 to 3 layers of parenchymatous cells forming middle layers of the anther wall. The cells of middle layers degenerate at maturfty during dhe formation of microspores.
(7) The tapetum is the innermost nutritive layer of the wall of the anther, consis ting of a single layer of cell surrourding the sporogenous tissue.